Door controller



FIG. 1 is a top, front, right perspective view of a door controller;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left elevation view thereof;

FIG. 5 is a right elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The portions of the door controller shown in broken lines discloseenvironmental structure and form no part of the claimed design.

CLAIM We claim the ornamental design for a door controller, as shown anddescribed.